Never enough..
beta testers, how many million of us does MS have? but still it takes years for something obviously ill considered to be changed.
I've only fired up desktop Skype a few times in the last few years when checking where to enter settings for supporting others (I mainly use skype on a landline/skype dect phone).
I tried the Modern app a few times and simply thought if this is the future interface and the DECT handset stops working I'm going to find something else, just not worth trying to work with those gui decisions.